Electric saw.



Patented Apr. 3, 1917.

S. A. ANDERSON, JR.

ELECTRiC SAW.

APPLICATION FILED JUNE 25,1915.

T 1 m m N v A0 H n n h r u H m 7 n 1 o/J a/ U OJ I 1 III I V 9 [/8 J W ttUEL A. ANDERSON, JR, OF LOUISVILLE, KENTUCKY.

ELECTRIC SAW.

Specification of Letters Patent.

Patented Apr. 3, 119%,

Application filed June 25, 1915. Serial No. 36.298.

To all whom it may concern:

lie it known that l, SAM LEL A. ANDERSON, J12, a citizen of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in Electric Saws; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of the present invention is to improve the construction of electric saws and to provide a simple, practical and comparatively inexpensive portable electric saw adapted for all kinds of work in the woodworking art, which will enable a workman to perform a much greater amount of work than is possible with an ordinary hand saw.

l/Vith these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion and minor details of construction may be resorted to Without departing from the spirit or sacrificing any of the advantages of the invention.

in the drawing Figure 1 is an elevation of a portable electric hand saw constructed in accordance with this invention,

Fig. 2 is a longitudinal sectional View illustrating the, manner of adjustably mounting the saw to permit the same to be arranged at difi'erent angles.

Like numerals of reference designate corresponding parts in all the figures of -the drawings.

in the accompanying drawing in which is illustrated the preferred embodiment of the invention, the portable electric hand saw comprises in its construction an electric motor 1 provided at one side with a hollow handle 2 through which extends the motor shaft 3 which also projects from the opposite side of the motor. The motor shaft has keyed or otherwise secured to it a miter gear 4: located at the side of the motor opposite that at which the handle is arran ed and meshing with the miter gear 5 suita ly fixed to a vertical shaft 6. The shaft 6 extends through a bearing sleeve 7 and the frame of the motor is equipped with upper and lower horizontal bearing arms 8 and J provided with collars 10 and 11 have set screws 12 and 13 for engaging a grooved collar or ring 14 of the shaft (5 and a bearing 15 of the sleeve 7.

The miter gear 5 which is arranged horizontally is located at the upper end of the bearing sleeve 7 and it meshes with the vertical bevel or miter gear which is located between the upper and lower horizontal arms 8 and 9 of the motor casing 1.

The vertical shaft 6 is provided at its lower end with a horizontal miter gear 16 which meshes with a vertical miter gear 17 of a horizontal saw mandrel 18 journaled in a bearing frame 19 and carrying a circular saw 20. The bearing frame 19 which is approximately inverted U-shaped is composed of spaced sides and a top connecting portion provided at a central point with a collar 21 which is suitably secured to the bearing sleeve 7 at a point adjacent to the lower end thereof. The lower miter gears are suitably secured to the shafts 6 and 18 and when the motor is operated the saw is caused to rotate at a high rate of speed thereby enabling 1t to make a clean clear cut and obviating the necessity of finishing the material operated on by the electric saw. The set screw 13 admits of the rotary adjustment ,of the sleeve and the bearing frame carried by the same as the screw engages the collar, carried near the upper end thereof and olds said sleeve against rotation. It will thus be seen that the plane of the circular saw may be arranged at various angles with relation to the axis of the motor shaft.

at I claim is 1. A portable saw comprising a hollow shaft, a U-shaped frame at one end'of the shaft, a pair of brackets swivelly mounted to the opposite end of the shaft, set screws for holding the brackets in various adjusted positions with relation to the shaft, a saw arbor rotatably mounted between the arms of the U-shaped frame, a saw on the arbor adapted to be held in various planes with relation to the brackets according to the position the shaft is held by the set screws, a drive shaft rotatably mounted within the hollow shaft, bevel pinions on the drive shaft, a pinion on the saw arbor meshing with one of the pinions, a motor supported by the brackets, a bevel pinion on the motor shaft meshing with the other bevel pinion on the drive shaft and a handle extending axially from the motor and having the end of I the motor shaft opposite that carrying the bevel pinion journaled therein to reinforce said handle.

2. A portable saw including a tubular shaft, a pair of collars mounted near one end of said shaft, a U-shaped frame mounted near'the opposite end of the shaft, r1ngs surrounding the collars, set screws threaded into. the rings for engagement against the collars to hold the'shaft in various ad]usted positions with relation to the rings, arms' extending radially from the rings, an electric naled in the handle, a pinion on the end of the shaft opposite that mounted within the handle, a drive shaft rotatably mounted within the tubular shaft, a bevel pinion near one end of said drive shaft meshing with the pinion on the motor shafttatcbevel inion on the opposite end of the drive sha and rotatably mounted in thefigme, asaw arbor rotatably mounted betweenthe'ar'ms of the frame, a bevel pinion carried by the saw arbor and meshing with the bevel pinion on the main drive shaft and a circular saw mounted on the saw arbor and adapted to be driven upon operation of the motor.

In testimony whereof I afiix my signature in presence of two witnesses.

SAMUEE A. ANDERSON, JR.

Witnesses: I

T. B. MCAULIFFE, 4 ETHELoA SCHUFF. 

